Knee joint brace



FIG. 1 is a perspective view of a knee joint brace according to the present invention;

FIG. 2 is a left side view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines illustrate portions of the knee joint brace which form no part of the claimed design. 

The ornamental design for a knee joint brace, as shown and described. 